/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Returns true if the provided element index is valid
Returns true if the provided element index is valid
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=URigHierarchy) bool IsValidIndex ( int32 InElementIndex ) const